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一个用hibernate做报表的问题

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  • acidpie
  • 等级: 初级会员
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   发表时间：2007-03-24  
  本人最近在技术转型过程中，从DELPHI开发平台转到JAVA开发平台。为了到达好的学习效果，我准备改造以前自己用DELPHI做的报表系统。在改造过程中，我决定用Hibernate做为持久化中间件。经过两个星期的学习和开发过程中，发现Hibernate并不适合做报表(也许我对HB的理解还不够吧，希望牛人出来指点一下 )。如下面实例：
  表结构： 
create table dbo.owner_serverfee (
owner_no    char(4) not null,
ls_name  varchar(255)    not null,
area_name   varchar(32) null,
incomefee   decimal(14, 2)  not null,
truemonth   char(6) not null,
addfee  decimal(14, 2)  null,
reducefee   decimal(14, 2)  null,
gen_time    datetime    not null,
constraint PK_no_month PRIMARY KEY CLUSTERED (owner_no,ls_name,truemonth )
)

通过MyEclipse生成对应的映射文件和POJO: 
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- 
    Mapping file autogenerated by MyEclipse - Hibernate Tools
-->
<hibernate-mapping>
    <class name="com.acidpie.bean.OwnerServerfee" table="owner_serverfee" schema="dbo" catalog="center06">
        <composite-id name="id" class="com.acidpie.bean.OwnerServerfeeId">
            <key-property name="lsName" type="java.lang.String">
                <column name="ls_name" />
            </key-property>
            <key-property name="ownerNo" type="java.lang.String">
                <column name="owner_no" length="4" />
            </key-property>
            <key-property name="truemonth" type="java.lang.String">
                <column name="truemonth" length="6" />
            </key-property>
        </composite-id>
        <property name="areaName" type="java.lang.String">
            <column name="area_name" length="32" />
        </property>
        <property name="incomefee" type="java.lang.Double">
            <column name="incomefee" precision="14" not-null="true" />
        </property>
        <property name="addfee" type="java.lang.Double">
            <column name="addfee" precision="14" />
        </property>
        <property name="reducefee" type="java.lang.Double">
            <column name="reducefee" precision="14" />
        </property>
        <property name="genTime" type="java.util.Date">
            <column name="gen_time" length="23" not-null="true" />
        </property>
    </class>
</hibernate-mapping>



package com.acidpie.bean;

import java.util.Date;


/**
 * OwnerServerfee generated by MyEclipse - Hibernate Tools
 */

public class OwnerServerfee  implements java.io.Serializable {


    // Fields    

     private OwnerServerfeeId id;
     private String areaName;
     private Double incomefee;
     private Double addfee;
     private Double reducefee;
     private Date genTime;


    // Constructors

    /** default constructor */
    public OwnerServerfee() {
    }

	/** minimal constructor */
    public OwnerServerfee(OwnerServerfeeId id, Double incomefee, Date genTime) {
        this.id = id;
        this.incomefee = incomefee;
        this.genTime = genTime;
    }
    
    /** full constructor */
    public OwnerServerfee(OwnerServerfeeId id, String areaName, Double incomefee, Double addfee, Double reducefee, Date genTime) {
        this.id = id;
        this.areaName = areaName;
        this.incomefee = incomefee;
        this.addfee = addfee;
        this.reducefee = reducefee;
        this.genTime = genTime;
    }

   
    // Property accessors

    public OwnerServerfeeId getId() {
        return this.id;
    }
    
    public void setId(OwnerServerfeeId id) {
        this.id = id;
    }

    public String getAreaName() {
        return this.areaName;
    }
    
    public void setAreaName(String areaName) {
        this.areaName = areaName;
    }

    public Double getIncomefee() {
        return this.incomefee;
    }
    
    public void setIncomefee(Double incomefee) {
        this.incomefee = incomefee;
    }

    public Double getAddfee() {
        return this.addfee;
    }
    
    public void setAddfee(Double addfee) {
        this.addfee = addfee;
    }

    public Double getReducefee() {
        return this.reducefee;
    }
    
    public void setReducefee(Double reducefee) {
        this.reducefee = reducefee;
    }

    public Date getGenTime() {
        return this.genTime;
    }
    
    public void setGenTime(Date genTime) {
        this.genTime = genTime;
    }

}





package com.acidpie.bean;

/**
 * OwnerServerfeeId generated by MyEclipse - Hibernate Tools
 */

public class OwnerServerfeeId  implements java.io.Serializable {


    // Fields    

     private String lsName;
     private String ownerNo;
     private String truemonth;


    // Constructors

    /** default constructor */
    public OwnerServerfeeId() {
    }

    
    /** full constructor */
    public OwnerServerfeeId(String lsName, String ownerNo, String truemonth) {
        this.lsName = lsName;
        this.ownerNo = ownerNo;
        this.truemonth = truemonth;
    }

   
    // Property accessors

    public String getlsName() {
        return this.lsName;
    }
    
    public void setlsName(String lsName) {
        this.lsName = lsName;
    }

    public String getOwnerNo() {
        return this.ownerNo;
    }
    
    public void setOwnerNo(String ownerNo) {
        this.ownerNo = ownerNo;
    }

    public String getTruemonth() {
        return this.truemonth;
    }
    
    public void setTruemonth(String truemonth) {
        this.truemonth = truemonth;
    }
   



   public boolean equals(Object other) {
         if ( (this == other ) ) return true;
		 if ( (other == null ) ) return false;
		 if ( !(other instanceof OwnerServerfeeId) ) return false;
		 OwnerServerfeeId castOther = ( OwnerServerfeeId ) other; 
         
		 return ( (this.getlsName()==castOther.getlsName()) || ( this.getlsName()!=null && castOther.getlsName()!=null && this.getlsName().equals(castOther.getlsName()) ) )
 && ( (this.getOwnerNo()==castOther.getOwnerNo()) || ( this.getOwnerNo()!=null && castOther.getOwnerNo()!=null && this.getOwnerNo().equals(castOther.getOwnerNo()) ) )
 && ( (this.getTruemonth()==castOther.getTruemonth()) || ( this.getTruemonth()!=null && castOther.getTruemonth()!=null && this.getTruemonth().equals(castOther.getTruemonth()) ) );
   }
   
   public int hashCode() {
         int result = 17;
         
         result = 37 * result + ( getlsName() == null ? 0 : this.getlsName().hashCode() );
         result = 37 * result + ( getOwnerNo() == null ? 0 : this.getOwnerNo().hashCode() );
         result = 37 * result + ( getTruemonth() == null ? 0 : this.getTruemonth().hashCode() );
         return result;
   }   





}

  现有报表系统对该表进行查询的报表中SQL语句如下 

select owner_no,area_name,sum(incomefee),sum(isnull(addfee,0)-isnull(reducefee,0)) from owner_serverfee where truemonth=:month group by owner_no,area_name


我用以下代码 
 Query qry=session.createQuery("select ownerNo,areaName,sum(incomefee),sum(isnull(addfee,0)-isnull(reducefee,0)) from OwnerServerfee where trueMonth=:month group by ownerNo,areaName");
  qry.setString("month","200611");    
  List result = qry.list();

会出现以下异常 
Exception in thread "main" java.lang.IllegalStateException: No data type for node: org.hibernate.hql.ast.tree.IdentNode 
 +-[IDENT] IdentNode: 'ownerNo' {originalText=ownerNo}

	at org.hibernate.hql.ast.tree.SelectClause.initializeExplicitSelectClause(SelectClause.java:140)
	at org.hibernate.hql.ast.HqlSqlWalker.useSelectClause(HqlSqlWalker.java:702)
	at org.hibernate.hql.ast.HqlSqlWalker.processQuery(HqlSqlWalker.java:531)
	at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:645)
	at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:281)
	at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:229)
	at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:218)
	at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:158)
	at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:109)
	at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:75)
	at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:54)
	at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:71)
	at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:133)
	at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:112)
	at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1583)
	at com.acidpie.business.Test.main(Test.java:32)

我个人分析是因为在针对owner_no,truemonth字段的get和set函数是在OwnerServerfeeId类中定义，而OwnerServerfeeId并没有映射文件。
但是我想了三天也没有解决如何通过hibernate来实现这个报表，如果还不行我只有用JDBC来实现了。


各位牛人！
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  • wren
  • 等级: 初级会员
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   发表时间：2007-03-25  
你的OwnerServerfee中没有ownerNo字段当然会出错,应用连接查询,感觉映射关系没理清. 另复杂的查询可直接用jdbc
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  • dada
  • 等级: 四星会员
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  • 来自: 上海
   发表时间：2007-03-25  
hibernate确实不适合做复杂的报表，如果是为了学习的目的，建议不要用报表系统上手，概念上不是特别吻合。

ps: composite-id 最好也别用，图增烦恼的玩意儿。
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  • acidpie
  • 等级: 初级会员
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   发表时间：2007-03-25  
谁能帮我解决一下阿，我可不想出师不利阿
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  • jackey3316
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  • 来自: 上海
   发表时间：2007-03-25  
查询语句有问题  请用  id.ownerNo  因为你是用组合主键

select id.ownerNo,areaName,sum(incomefee),sum(isnull(addfee,0)-isnull(reducefee,0)) from OwnerServerfee where trueMonth=:month group by ownerNo,areaName

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  • lihy70
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   发表时间：2007-03-29  

用我的。
https://sourceforge.net/projects/dbcoat/
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  • leonwoo
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   发表时间：2007-05-19  
No data type for node这个错误是因为你在hql欲查询的字段名（对象属性名）和hbm.xml中的属性不匹配或者找不到引起的。
hql中属性名必须和pojo中的属性名一致（区分大小写）。
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